package com.imoocdl.utils;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by pc on 2018/7/27.
 */
public class CookieUtil {
    public static void set(HttpServletResponse response,String name,String value,int maxAge){
        Cookie cookie = new Cookie(name,value);
        cookie.setPath("/");
        cookie.setMaxAge(maxAge);
        response.addCookie(cookie);
    }

    public static Cookie get(HttpServletRequest request,String name){
       Map<String,Cookie> cookieMap =  readCookieMap(request);
       if(cookieMap.containsKey(name)){
           return cookieMap.get(name);
       }
       return null;
    }

    private static Map<String,Cookie> readCookieMap(HttpServletRequest request){
        Map<String,Cookie> map = new HashMap<>();
        Cookie[] cookies = request.getCookies();
        if(cookies != null){
            for(Cookie cookie:cookies){
                map.put(cookie.getName(),cookie);
            }
        }
        return map;
    }
}
